National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Portland Municipal Airport (K1M5)

Lat: 36.59°NLon: 86.48°WElev: 818ft.

Fair

43°F

6°C

Humidity 81%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 8 Nov 8:15 pm CST
Extended Forecast for

3 Miles SSE Portland TN

  • Tonight

    Tonight: Patchy fog before 3am, then patchy fog after 4am. Otherwise, clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear then
    Patchy Fog

  • Monday

    Monday: Patchy fog before 9am. Patchy frost before 7am. Otherwise, sunny, with a high near 66. Calm wind.

    High: 66 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Monday Night

    Monday Night: Patchy fog between 9pm and 3am. Otherwise, clear, with a low around 39. Calm wind.

    Low: 39 °F

    Patchy Fog

  • Tuesday

    Tuesday: Sunny, with a high near 68. Calm wind becoming southwest around 5 mph.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog between 9pm and 5am. Otherwise, mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Patchy Fog

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 69. Light south wind becoming south southwest 5 to 10 mph in the morning.

    High: 69 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 46. South southwest wind 5 to 10 mph becoming west northwest after midnight. Chance of precipitation is 70%.

    Low: 46 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers. Mostly cloudy, with a high near 56. Northwest wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 56 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog before 3am, then patchy fog after 4am. Otherwise, clear, with a low around 36. Calm wind.
Monday
Patchy fog before 9am. Patchy frost before 7am. Otherwise, sunny, with a high near 66. Calm wind.
Monday Night
Patchy fog between 9pm and 3am. Otherwise, clear, with a low around 39. Calm wind.
Tuesday
Sunny, with a high near 68. Calm wind becoming southwest around 5 mph.
Tuesday Night
Patchy fog between 9pm and 5am. Otherwise, mostly clear, with a low around 41. Calm wind.
Veterans Day
Mostly sunny, with a high near 69. Light south wind becoming south southwest 5 to 10 mph in the morning.
Wednesday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 46. South southwest wind 5 to 10 mph becoming west northwest after midnight. Chance of precipitation is 70%.
Thursday
A 20 percent chance of showers. Mostly cloudy, with a high near 56. Northwest wind 15 to 20 mph, with gusts as high as 25 mph.
Thursday Night
Mostly cloudy, with a low around 34. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 48.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Sunny, with a high near 51.
Saturday Night
Mostly clear, with a low around 29.
Sunday
Sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Portland TN
 36.54°N 86.51°W (Elev. 801 ft)
Last Update:
5:01 pm CST Nov 8, 2026
Forecast Valid:
8pm CST Nov 8, 2026-6pm CST Nov 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation